Grease extracting vent



June 5, 1956 w. A. SMITH 2,748,688

GREASE EXTRACTING VENT Filed Sept. 24. 1953 2 Sheets-Sheet 1 Fig 3 Willam A g ,7; INVENTOR. Q

BY gamma WWW June 1956 w. A. SMITH 2,748,688

GREASE EXTRACTING VENT Filed Sept. 24, 1953 2 SheetsSheet 2 Fig. 2

Wi/l/arn A. Smith INVEN TOR.

United States Patent GREASE EXTRACTING VENT William A. Smith, Dallas,Tex.

Application September 24, 1953, Serial No. 382,153

4 Claims. (Cl. 98115),

This invention relates to a grease extracting vent and more specificallyprovides a vent for extracting grease from the fumes created. by a cookstove during the cooking process.

- An'object of this invention is to provide a canopy for a cook stoveproviding a grease extracting vent therefor;

Another object of this invention is to provide a grease extracting venthaving a receptacle for receiving the extracted grease which may beremoved thereby eliminating a serious fire hazard.

A further object of this invention is to provide a grease extractingvent to be used in conjunction with an. exhaust fan for exhausting airto the atmosphere.

Yetanother object of this invention is to provide a grease extractingvent having a fume deflecting drum providing a torturous path for thegrease laden fumes, thereby condensing and depositing the grease on thedrum and walls of the vent.

A still further object of this invention is to provide portions of thevent that are removable and foldable to a position wherein the interiorof the vent is easily cleaned and maintained in a safe and sanitarycondition.

Another important object of this invention is to provide a greaseextracting vent that is simple in construction, easy to install,efiicient in operation and inexpensive to manufacture.

These together with other objects and advantages which will becomesubsequently apparent reside in the details of construction andoperation as more fully hereinafter described and claimed, referencebeing had to the accompanying drawings forming a part hereof, whereinlike numerals refer to like parts throughout, and in which:

Figure 1 is a perspective view showing the grease extracting vent ofthis invention assembled over a stove;

Figure 2 is a transverse vertical section taken substantially along thecenter line of the vent showing the details of the structure of thegrease extracting vent;

Figure 3 is a top plan section taken substantially along section line 33of Figure 1 showing the relationship between the vent and the stove;

Figure 4 is a detailed front elevation partly in section showing detailsof the apron securing means; and

Figure 5 is a perspective view showing details of the drum and thesuspension means therefor.

Referring now specifically to Figure 1, it will be seen that the greaseextractor of this invention includes a canopy member fitted over theupper edge of a stove 12 and having a discharge conduit 14 and atransition conduit 16 between the canopy 10 and the discharge conduit14. The discharge conduit 14 has a suitable discharge fan locatedtherein for pulling the grease laden fumes through the grease extractingvent.

It will be seen that the canopy 10 includes a back wall 18, side walls20 and a partially depending front wall 22 having a return bentstrengthening rib 24 across the front portion thereof. A top wall 26 isprovided on the canopy 10 and is provided with a suitable dischargeopen- 2,743,633 Patented June 5, 1956 ing 28. which extends completelyacross the upper portion of the canopy 10. Secured to the rear wall 18is a forwardly and: upwardly extending bracket member 30 forming asupport for a grease pan 32 and having an apron battle member 34 pivotedto its outer edge by a suitable hinge means 36. The apron 34 is agenerally vertical member and is held in its vertical position by asliding latch member 38 having a latch housing 40 and a handle .apron 34to be pivoted about hinge 36 to an open position thereby providingaccess to the interior of the canopy .10- and removal of the grease pan32 for removing the extracted. grease and cleaning the interior of thecanopy.

' As best seen in Figure 2, the opening 28 has a projecting hook member46 on the bottom end of a projection and a; cylindrical drum 48 having asuspension plate 50 projecting from the periphery thereof and having ahook member 52 for engaging over the hook 46 thereby suspending, thedrum 48 within the confines of the canopy 10. It will be seen that thedrum 48 is suspended over the grease pan 32 in. spaced relation to therear wall 18 and. the. apron 34 and the suspension plate 50 formsyaclosure from the top wall 26 down to the drum 48. As will be seen, thegrease laden fumes follow the arrows as shown in Figure 2, that is, upover the apron 34 and then downwardly about the periphery of the drum 48wherein the grease is deposited on the drum and drips oil? into the pan32. A pair of angle brackets 54 are secured on the end members 20 forsupporting the lower periphery of the drum in operative position. Bylowering the apron 34, the drum 48 may be removed by disengaging thehook members 46 and 52 for cleaning as becomes necessary. All of themembers 30, 32, 34, 46, 48, 50 and 52 extend throughout the entirelength of the canopy and engage both ends walls 20.

The operation of the device will be readily understood. The canopy 10 isinstalled over the stove 12 and the discharge conduit 14 is suitablyequipped with a discharge fan for pulling the grease laden fumes awayfrom over the stove 12 out through the discharge conduit 14. Fumes passup over the apron and are deflected downwardly about the outer peripheryof the cylindrical drum 48 and then upwardly through the opening 28 tothe discharge conduit 14. The grease fumes due to the centrifugal actionas they pass about the drum 48 and due to the change of direction asthey pass about the apron baflle 34 deposit the grease on the surfaceswhich are all tapered to drain the grease into the grease pan 32.Periodically, the pan 32 may be removed and emptied by disengaging thelatch members 38 and pivoting the apron 34 about the hinge pin 36wherein the grease pan may be removed. The drum and suspension plate mayalso be removed for cleaning and the interior of the device may beeasily cleaned for sanitation and elimination of any fire hazard.

The device of this invention may be made of any type sheet metal such asstainless steel meeting the requirements of sanitation and appearanceand the particular size of the canopy may be determined by theindividual needs of the various installations and the frequency ofcleaning, of course, is determined by the amount of use the stove issubject to. Obviously, the drum 48 may be made in a single section ormay be made in a plurality of sections for ease of handling and cleaningas desired.

From the foregoing, the construction and operation of the device will bereadily understood and further explanation is believed to beunnecessary. However, since numerous modifications and changes willreadily occur to those skilled in the art, it is not desired to limitthe invention to the exact construction shown and described, andaccordingly all suitable modifications and equivalents may be resortedto, falling within the scope of the appended claims.

What is claimed as new is as follows:

1. A grease extracting vent comprising an enlarged generally rectangularcanopy for collecting grease-laden fumes, a discharge conduit extendingfrom the upper end of the canopy for venting the canopy to theamosphere, a plate extending into the interior of the canopy and forminga continuation of one side of said discharge conduit, a bracket on eachside wall of the canopy, a cylindrical drum supported on said plate andsaid brackets, said drum and plate extending horizontally and completelyacross the interior of the canopy, a bafiie extending across said canopyand extending to the rear wall of the canopy in spaced relation to thedrum and plate and being disposed between the drum and the source offumes, said bafiie terminating in spaced relation to the top of thecanopy and above the lower periphery of the drum, said discharge conduitbeing disposed on the opposite side of the drum from the battle wherebygrease-laden fumes must pass over the upper end of the baflie anddownwardly around the drum and upwardly through the discharge conduitfor extracting grease from the fumes by centrifugal force as they passaround the lower periphery of the drum.

2. The combination of claim 1 wherein said drum supporting plateincludes a hooked upper longitudinal edge, said one side of saiddischarge conduit having a hooked longitudinal edge for detachablysupporting said plate and drum to permit removal thereof, said drumresting upon said brackets to permit lifting thereof to disengage thehooked edges.

3. The combination of claim 2 wherein said battle has a lower sectionrigidly attached to the canopy and extending under the drum and an uppersection pivotally attached to the lower section, and releasable latchmeans adjacent the upper end of said upper section of the baffle forengagement with opposite walls of the canopy to permit vertical swingingmovement of the upper section of the baflie whereby the drum and platemay be removed for cleaning.

4. The combination of claim 3 together with a remov' able receptacledisposed on the upper surface of the lower section of the bafiie, saidreceptacle being positioned under said drum for collecting grease fromthe fumes.

References Cited in the file of this patent UNITED STATES PATENTS689,104 Mason Dec. 17, 1901 2,226,641 Sonntog Dec. 31, 1940 2,375,608Young May 8, 1945 2,564,074 Musante Aug. 14, 1951 FOREIGN PATENTS237,665 Great Britain Aug. 6, 1925 323,049 Great Britain Dec. 24, 1929556,361 Great Britain Oct. 1, 1943 901,740 France Nov. 13, 1944

